Originally Posted by TURBS
Adding an amp meter can be expensive even buying a cheap China bomb.
A shunt is required in the 100 amp range to be safe.
A better idea is a complete battery monitoring system that can actually tell you amps, REAL state of charge, present usage, hours remaining at present usage, parasitic loads, loads for each item used etc.
About $160 includng shunt.
Victronix and Trimetric make them as does Xantrex at a higher price point for the same performance.
Needed if you boondock...not needed if you remain plugged in. Used one on my sailboat off the grid with solar, wind and genny for a number of years. My favorite and most used instrument other than the GPS!